Why won't my 2023 documents upload? When I tap on the "upload" it brings me to my personal files, but that won't let me do anything either.

I need to see what my daughters refund was last year so I can enter it on this years form.
I had one form seem like it was going to upload, it went to a MyDocs thing I have never seen, when I tried to view it it was just a black screen.